9230 Interference of Sound 



apparatus. Barrett, W. F. L. Ps. S. P. 1 



(1876) 51-; Ph. Mg. 48 (1874) 139-. 

 . Eighi, A. Bologna Ac. Sc. Mm. 2 (1891) 



261-. 



. Slotte,K.F. Helsingf. Ofv. 38 (1896) 86-. 

 application of law to combination - tones. 



Poggmdorff, J. C. Pogg. A. 32 (1834) 520-. 

 and consonance and absorption in sound and 



light, pendulum experiments. Isenkrahe, C, 



Carl Kprn. 16 (1880) 99-, 516-. 

 disturbance by an element of plane wave of 



sound or light. Basset, A. B. L. Mth. S. 



P. 22 (1891) 317-. 

 of electric explosions. Waha, M. de. Lux. I. 



Pb. 16 (1877) 49-. 

 experiment, lecture-. Terquem, A. J. de Ps. 



6 (1877) 316-. 

 experiments. Villari, E. Bologna Ac. Sc. 



Mm. 1 (1890) 673-. 

 with sensitive flames. Gezechus [Hesehus], 



N. Es. Ps.-C. S. J. 24 (Ps.) (1892) 156- ; J. 



de Ps. 2 (1893) 528. 



vowels. Sauberschwarz , E. Pfliig. 

 Arch. PL 61 (1895) 1-. 



of longitudinal waves, construction for. Matthes, 



C. J. Arch. Mth. Ps. 49 (1869) 486-. 

 observed with membrane. Weber, W. E. 



Schweigger J. 50 (= Jb. 20) (1827) 247-. 

 phenomena due to concurrence of 2 sounds. 



Eadau, E. Mon. Sc. 18 (1876) 323-. 

 secondary tones made audible by. Dove, H. W. 



Berl. Mb. (1862) 97-. 

 by telephone. Cook, C. S. Science 1 (*1883) 



167. 

 tubes, Norremberg's. Muller, (Dr.) J. [1854] 



Freiburg B. 1 (1858) 43-. 

 of tuning fork (intensity in different directions). 



Chladni, E. F. F. Kastner Arch. Ntl. 7 



(1826) 92-. 

 ( ). Chladni, E. F. F., & 



Sommerring, W. Kastner Arch. Ntl. 8 (1826) 



91-. 

 . Addams, E. (vi Adds.) W. Eng. 



J. 1 (1836) 60-. 

 . Kiessling, H. A. Ps. C. 130 (1867) 177-. 



2 tuning forks. Grttel, C. A. Pogg. A. 

 104 (1858) 494-. 



near wall from which sound is reflected. 



Eayleigh, (Lord). Ph. Mg. 7 (1879) 150-. 

 "wandering tones." Eeuleaux, H. Bonn NH. 



Vr. Vh. 37 (1880) 161- ; Bonn Niedr. Gs. Sb. 



(1881) 116-. 

 wave-length of sound by grating method. 



Nardroff, E. E. von. [1900] N. Y. Ac. A. 



13 (1900-01) 511-. 



BEATS. 



Ohm, G. S. Pogg. A. 47 (1839) 463-. 

 Fabri, E. Em. At. N. Line. 17 (1864) 235-. 

 beat tone apparatus for lectures. K&nig, E. A. 



Ps. C. 12 (1881) 350-. 

 and beat tones of one body. Konig, E. A. Ps. 



C. 39 (1890) 395-. 

 beat tones, cerebral origin. Schaefer, K, L. 



Z. Psychol. 4 (1893) 348- ; 5 (1893) 397-. 

 , . Scripture, E. W. Ph. Stud. 8 



Beats 9230 



and beat tones due to harmonic intervals. Konig, 



E. A. Ps. C. 12 (1881) 335-. 

 beat tones of very high frequency, and dust 



figures produced by them. Konig, E. A. 



Ps. C. 69 (1899) 626-, 721-. 



from 2 vibrating bodies which are 

 separately inaudible because of their high 

 frequency. Mayer, A. M. B. A. Ep. (1894) 

 573. 



and combination tones, and Tartini's tones. 



Crotti, P. (xn) Ev. Sc.-Ind. 12 (1880) 



401-, 470-. 

 1 theory. Eadau, E. Les Mondes 8 



(1865) 9-, 52-. 

 of consonances of form h : 1. Bosanquet, 



E. H. M. L. Ps. S. P. 4 (1881) 221- ; 



Ph. Mg. 11 (1881) 420-, 492-. 

 and difference tones, appreciation. Scripture, 



E. W. Ph. Stud. 7 (1892) 630-. 

 , perception and localisation. Schaefer, 



K. L. Z. Psychol. 1 (1890) 81-. 

 of Hawkes's douzeave. B.,J. Tilloch Ph. Mg. 



37 (1811) 128-. 



imperfect consonances. De Morgan, A. 

 [1857] Camb. Ph. S. T. 10 (1864) 129-. 



. Thomson, (Sir) W. Edinb. E. S. P. 



9 (1878) 602-. 

 . Bosanquet, E. H. M. Ph. Mg. 12 



(1881) 434- ; 13 (1882) 131. 

 . Thompson, S. P. Ph. Mg. 13 (1882) 



68-. 

 , history of theory. Bosanquet, E. H. M. 



Ph. Mg. 12 (1881) 270-. 

 Koenig's superior. Sidgreaves, W. [1890] Nt. 



43 (1891) 9-. 

 method of producing. Athanasiades, G. A. 



Ps. 3 (1900) 753. 

 musical. Pole, W. Nt. 13 (1876) 212-, 



232-. 



. Ellis, A. J. E. S. P. 30 (1880) 520-. 

 Scheibler's investigations. Edber, A. Pogg. 



A. 32 (1834) 333-, 492-. 

 Tartini's tones. Purkyne, J. E. Kastner 



Arch. Ntl. 7 (1826) 39-. 

 , . Weber, W. E. Pogg. A. 15 (1829) 



216-. 

 . Helmholtz, H. Eheinl. Westphal. Sb. 



13 (1856) Ixxv-. 



, mathematical theory. Hopkinson, J. 

 Mess. Mth. 2 (1873) 24-. 



, objective existence. Dove, H. W. Pogg. 



A. 107 (1859) 652-. 

 theory. Terquem, A., & Boussinesq, V. J. 



As. Fr. C. E. (1874) 220-. 

 . Buzzolini, G. (xn) Ev. Sc.-Ind. 12 



(1880) 493-. 

 , and application to tuning of organs, etc. 



Vincent, A. J. H. A. C. 26 (1849) 37-. 

 , Konig's. Molloy, G. Nt. 42 (1890) 246. 

 of 2 tones, each heard by one ear only, central 



origin. Ewald, J. E. Pfliig. Arch. PI. 57 



(1894) 80-. 

 tuning forks. Villari, E. Bologna Ac. 



Sc. Mm. 2 (1872) 309-. 

 1 and method of tuning to unison. 



Spice, E. Am. J. Sc. 11 (1876) 372. 

 , microphone observations. Tuma, 



J. Wien Ak. Sb. 98 (1890) (Ab. 2a) 1028-. 



532 



